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中祥 范 on 4 Jun 2024 at 14:23
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Answered: Voss on 4 Jun 2024 at 15:34
In addition to the functions that come with matlab, I have added some additional toolboxes, so I want to make sure that there are more than one function with the same name in my directory, who can teach me.
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Answers (2)
Star Strider on 4 Jun 2024 at 14:28
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The which function can be helpful.
which which -all
built-in (/MATLAB/toolbox/matlab/general/which)
If there are any others in your MATLAB search path, it should display them as well.
.
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John D'Errico on 4 Jun 2024 at 14:31
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Edited: John D'Errico on 4 Jun 2024 at 14:32
Which is the first choice of course, but exist is another option.
Star Strider on 4 Jun 2024 at 14:36
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@John D'Errico — Noted. Thank you.
中祥 范 on 4 Jun 2024 at 14:53
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Thank you for your answer, but what I want to do is check if there are any functions with the same name in my path.
The 'which' function seems to only check one by one.
Star Strider on 4 Jun 2024 at 15:09
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It will detect all of them with the -all flag.
For example, the extremely useful matrix-left-divide (the \ operator) called mldivide, \ —
which mldivide -all
built-in (/MATLAB/toolbox/matlab/ops/mldivide)built-in (/MATLAB/toolbox/matlab/ops/@double/mldivide) % double methodbuilt-in (/MATLAB/toolbox/matlab/ops/@int16/mldivide) % int16 methodbuilt-in (/MATLAB/toolbox/matlab/ops/@int32/mldivide) % int32 methodbuilt-in (/MATLAB/toolbox/matlab/ops/@int64/mldivide) % int64 methodbuilt-in (/MATLAB/toolbox/matlab/ops/@int8/mldivide) % int8 methodbuilt-in (/MATLAB/toolbox/matlab/ops/@logical/mldivide) % logical methodbuilt-in (/MATLAB/toolbox/matlab/ops/@single/mldivide) % single methodbuilt-in (/MATLAB/toolbox/matlab/ops/@uint16/mldivide) % uint16 methodbuilt-in (/MATLAB/toolbox/matlab/ops/@uint32/mldivide) % uint32 methodbuilt-in (/MATLAB/toolbox/matlab/ops/@uint64/mldivide) % uint64 methodbuilt-in (/MATLAB/toolbox/matlab/ops/@uint8/mldivide) % uint8 method/MATLAB/toolbox/matlab/datatypes/duration/@duration/mldivide.m % duration method/MATLAB/toolbox/matlab/timeseries/@timeseries/mldivide.m % timeseries methodmldivide is a built-in method % matlab.internal.capability.Capability methodmldivide is a built-in method % connector.internal.LoggerLevel methodmldivide is a built-in method % matlab.lang.OnOffSwitchState method/MATLAB/toolbox/matlab/timeseries/+tsdata/@datametadata/mldivide.m % tsdata.datametadata methodmldivide is a built-in method % matlab.internal.reference.property.RefEntityType methodmldivide is a built-in method % matlab.internal.reference.api.EntityPrecision methodmldivide is a built-in method % matlab.internal.reference.property.DeprecationStatus methodmldivide is a built-in method % matlab.internal.reference.property.FunctionType methodmldivide is a built-in method % matlab.internal.reference.property.SyntaxType methodmldivide is a built-in method % matlab.internal.reference.api.EntityCaseSensitivity methodmldivide is a built-in method % simulink.FindSystemTask.Status methodmldivide is a built-in method % mf.zero.meta.Language methodmldivide is a built-in method % dig.config.CommandType methodmldivide is a built-in method % dig.config.HorizontalAlignment methodmldivide is a built-in method % dig.config.ResourceState methodmldivide is a built-in method % dig.config.ResourceType methodmldivide is a built-in method % dig.model.DisplayState methodmldivide is a built-in method % dig.model.EventDataType methodmldivide is a built-in method % dig.model.FunctionType methodmldivide is a built-in method % dig.model.ValidInBdType methodmldivide is a built-in method % dig.model.ViewMode methodmldivide is a built-in method % matlab.unittest.internal.fixtures.FolderScope methodmldivide is a built-in method % matlab.automation.Verbosity methodmldivide is a built-in method % matlab.internal.timer.CallBackTypeEnum methodmldivide is a built-in method % matlab.internal.timer.BusyModeEnum methodmldivide is a built-in method % matlab.internal.timer.ExecutionModeEnum method/MATLAB/toolbox/matlab/bigdata/@tall/mldivide.m % tall methodbuilt-in % gpuArray method/MATLAB/toolbox/econ/econ/@LagOp/mldivide.m % LagOp method/MATLAB/toolbox/parallel/array/distributed/@distributed/mldivide.m % distributed method/MATLAB/toolbox/parallel/array/distributed/@codistributed/mldivide.m % codistributed method/MATLAB/toolbox/parallel/gpu/gpu/@gpuArray/mldivide.m % gpuArray method/MATLAB/toolbox/shared/controllib/engine/@StaticModel/mldivide.m % StaticModel method/MATLAB/toolbox/shared/controllib/engine/@DynamicSystem/mldivide.m % DynamicSystem method/MATLAB/toolbox/wavelet/wavelet/@laurpoly/mldivide.m % laurpoly method
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Voss on 4 Jun 2024 at 15:34
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You can loop over the m-files in your folder, call which(_,'-all') on each one, and store information about what which returned:
F = dir('*.m');
for ii = 1:numel(F)
C = which(F(ii).name,'-all');
F(ii).instances = C;
F(ii).is_duplicate = numel(C) > 1;
end
Then the files that have same-name duplicates somewhere on the path are
D = F([F.is_duplicate]);
and their same-name duplicate locations are given by
D.instances
Example:
% create some folders with m-files
% Folder1 contains file1.m and file4.m
mkdir('Folder1')
fid = fopen(fullfile('Folder1','file1.m'),'w'); fclose(fid);
fid = fopen(fullfile('Folder1','file4.m'),'w'); fclose(fid);
% Folder2 contains file1.m and file2.m
mkdir('Folder2')
fid = fopen(fullfile('Folder2','file1.m'),'w'); fclose(fid);
fid = fopen(fullfile('Folder2','file2.m'),'w'); fclose(fid);
% add the folders to the path
addpath('Folder1','Folder2')
% the current folder contains file1.m, file2.m, and file3.m
fid = fopen('file1.m','w'); fclose(fid);
fid = fopen('file2.m','w'); fclose(fid);
fid = fopen('file3.m','w'); fclose(fid);
% run the code above
F = dir('*.m');
for ii = 1:numel(F)
C = which(F(ii).name,'-all');
F(ii).instances = C;
F(ii).is_duplicate = numel(C) > 1;
end
% F contains info about the files in the current folder
F
F = 3x1 struct array with fields:
name folder date bytes isdir datenum instances is_duplicate
F.name
ans = 'file1.m'
ans = 'file2.m'
ans = 'file3.m'
% D contains info about those files that have same-name duplicates
% somewhere on the path
D = F([F.is_duplicate])
D = 2x1 struct array with fields:
name folder date bytes isdir datenum instances is_duplicate
D.name
ans = 'file1.m'
ans = 'file2.m'
% D.instances tells you where the duplicates are
D.instances
ans = 3x1 cell array
{'/users/mss.system.v6zxt/file1.m' } {'/users/mss.system.v6zxt/Folder1/file1.m'} {'/users/mss.system.v6zxt/Folder2/file1.m'}
ans = 2x1 cell array
{'/users/mss.system.v6zxt/file2.m' } {'/users/mss.system.v6zxt/Folder2/file2.m'}
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